Spike drawer or extractor.



Patented Oct. I4, |902.

G. F. PEARSON.

`SPIKE DRAWER 0R EXTRACTOH.

kApplicaton led Jan. S. 1902.1

(No Model.)

SPIKE DRAWER 0R ExTRAcTuR.

24 Sheets-Sheet 2.

mvv/DVV '777.77777 Y.

Witnesses UNTTED STATES lPATENT OFFICE.

GEORGE FOSTER PEARSON, OF LOWELL, MASSACHUSETTS, ASSIGNOR TO SARAH C.MORRILL, OF NEW YORK, N. Y., TRADING AS CHARLES MORRILL.

SPIKE DRAWER OR EXTRACTOR.

SPECIFICATION forming part of Letters Patent No. 711,341, dated October14, 1902.

Application filed January 8| 1902. Serial No. 88,921. (No model.)

To LZZ whom it may concern:

Be it known that I, GEORGE FOSTER PEAR- SON, a citizen of the UnitedStates, and a resident of Lowell, in the county of Middlesex and Stateof Massachusetts, have made a certain new and useful Invention in SpikeDrawers or Extractors; and I declare the following to be a full, clear,and exact description ofthe same, such as will enable others skilled inthe art to which it appertains to make and use the invention, referencebeing had to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification. l

Figure lis a central longitudinal section of my invention, thehandle-lever being shown as raised. Fig. 2 is a similar View withhandle-lever depressed. Fig. 3 is a fragmentary sectional view of theupper end of frame A. Figs. 4 and 5 are sectional views on line fr, Fig.l, on a larger scale and showing jaws G G' open and closed. Fig. 6 is aside elevation of the extractor as applied. Figs. '7 and 8 illustrate amodied form of the invention.

This invention has relation to spike drawers or extractors, and has forits object the provision of such a device of novel and etticientcharacter, as hereinafter described, and pointed out in the appendedclaims.

Referring to the accompanying drawings, the letter A designates thetubular frame of my device, having a base portion B of skeletoncharacter and terminating belowin downwardly-extending branches orbifurcations b of channel form in cross-section and designed to restupon the rail ange and tie to which their lower surfaces conform.

v In the tubular frame A is the rack-bar C, provided at its lower endwith the spike-gri pping jaws hereinafter described, such bar havingalong one side thereof the teeth c, and in order to raise such bar thefollowing devices are provided.

D is the handle-lever, pivoted to base B and having a cam end portionD', projecting within such base below and in engagement withSleeve-support D2, which surrounds bar C and rests upon said cam endportion. Upon sleeve D2 rests iioating pawl e of tubular or sleevecharacter and through the opening in which passes the rack-bar. Thispawl operates or turns upon a raised edge e' of sleeve D2 and has at oneside an acute wall or tooth e2, arranged to engage the teeth of therackbar, and at the opposite side an operating lug c3, projectingthrough an opening of the base. This pawl is weighted to normally tipinto engagement with the teeth of the rack-bar, which it raises uponupward movement of the handle-lever, while upon downward movement ofsuch lever, the sleeve D2 and pawl falling, the tooth of the pawl willslip down upon the rack-bar into engagement with the tooth next below,the rack-bar being held in raised position by upper pawl f of similarcharacter to the lower pawl e and resting and turning upon pinf of theframe and weighted to normally tip into engagement with the teeth of therack-bar at one side, while at the opposite side thereof an operatinglug f2 pro-Y Ilower ends or jaws proper of convergingwedge characterarranged to operateupon opposite sides of the spike-head, such jawsbeing pivoted through toggle-links g to pin g, engaging the lower end ofthe rack-bar, such links being received at their upper ends in the slotbetween the branches of such lower end portion of the rack-bar, which isbifurcated, and at their lower ends in central slots through thelever-jaws, to which they are connected intermediately of the lengths ofsuch jaws. The upper ends of the jaws yare pivoted to lateral lugs hof aguide-plate or slide H, reciprocating in a slot t/ of the rack-bar andhaving a guideslot h2 therein engaging pins h3 of the rack-bar. The jawsare of straight character between their fulcrum and toggle pivots. Thesejaws close by gravity to the spike and under strain through the rack-barhave a powerful leverage exerted thereupon through the toggle-linksaforesaid t0 close tightly to the spike, and the greater this straincaused by greater resistance of the spike the tighter the jaws closethereupon. As the jaws close they fall, the guide-plate H movingdownwardly in the rack-bar and the upper ends of the jaws fulcrumingupon their connections to such slide.

In operation the device is placed over the spike to be extracted, withthe footpiece C3 resting upon the rail-iiauge and tie at opposite sidesof the spike, and, assuming that a spike l has been previouslywithdrawn, the

`rack-bar is pushed downwardly through its upper headed extension G,passing through an opening in the screw-cap A3 of the uppertube-section, such movement being checked by the plate-spring C2,carried by such bar and bearing against the inner wall of the tube. Asthe rack continues to move downwardly the jaws thereof, which aresubstantially parallel when completely closed, take a bearing againstthe head of the spike and being pressed upwardly rise, taking slidingfulcrums at their upper ends and spreading apart through separation ofthe toggle-links aforesaid until they fall over the projecting head ofthe spike at opposite sides thereof. The rack-bar is now forced upwardlystep by step through reciprocation of the handle-legether, and therebythe jaws to the spike, under the head thereof. The rack-bar is forcedupwardly until the spike has been completely extracted, when thelever-jaws will occupy the upper portion of the hollow footpiece, thespike occupying the lower portion thereof and falling over to one sidebetween the bifurcations of such footpiece as the rackbar is in turnagain moved downwardly when placed over a second spike for the removalof the samefrom its seat.

In Figs. 7 and 8 of the drawings I have shown a modification of myinvention. In this modification the rack-bar is raised by a pawl R,pivoted to and operated by movement of the handle-lever S, provided witha fulcrum bearing upon pin s. The center of the pivot-pin of the pawl Ris distant about one-half of an inch from the center of the pivot-pin ofl'ever S, which lever has a length of working arm of about two feet,whereby a powerful leverage is exerted to raise the rack-bar step bystep and yet in an expeditious manner. The pawl R is pressed to theteeth of lthe rack-bar at the upward limit of the stroke of thehandle-lever through pate-spring s', which is secured to the rear wallof the slotted end portion of such lever in which works the pawl R. Aprojecting lug or pin r upon such pawl allows it to be pressedbackwardly out of the way when it is desired to disen gage the same fromthe rackbar.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a spike-puller, the reciprocatory rackbar, a spring-brake forchecking the fall of such bar, the handle-lever, a pawl device operatedby said handle-lever to raise said bar, and the gripping device-carriedby said rackbar, substantially as specied.

2. In a spike-extractor, the tubular frame, the reciprocatory rack-barin said frame, and having an upper headed extension through the top ofsuch frame, the spring-brake in such frame for checking the fall of suchbar, the handle-lever, a pawl device operated by said handle-lever toraise said bar, and the gripping device carried by said rack-bar,substantially as specified.

3. In a spike-extractor, the reciprocatory lrack-bar, the handle-lever,the pawl device loperated -by said handle-lever to raise said g bar, theslide working in said bar, the gravityclosing jaws fulcruming uponbearings carried by said slide, the toggle-links connecting said jawsintermediately of the lengths thereof with said bar below such slide,said slide lbeing arranged to abut against said bar to 4limit theoutward movement of said jaws, s, and said jaws being arranged to abutagainst isaid bar to limit their inward movement, subf stantially asspecified.

ver D, thus closing the toggle-links g toi 4. In a spike-extractor, thecombination lwith the reciprocatory rack-bar carrying a `gripping deviceand working in a tubular frame, of the handle ,-lever pivoted toI saidframe, and having a cam end portion, aloose isupport carried by said camend portion, a i separate pawl device having a fulcrum upon 1, saidloose support and disconnected there- 'from, and means for preventingfall of said j bar between the strokes of the lever, substantially asspecified.

5. In a spike-extractor, the tubular frame,

z the reciprocatory rack-bar in said frame, and having an upperextension through the top of such frame, the spring-brake in such framefor checking the fall of such bar, the handlelever, the pawl deviceoperated by said handle-lever to raise said bar, the slide working insaid bar, the jaws fulcruming vupon bearings carried by said slide, andthe toggle-links connecting said jaws intermediately of the lengthsthereof,with said bar below such slide, substantially as specified.

6. In a spikeextractor, the combination with the reciprocatory rack-bar,having a gripping device of the handle-lever having a cam end portion, asupport carried by said cam end portion, and having a raised edge, alower pawl device arranged to turn upon said edge into engagement withthe teeth of IIO the rack, and an upper pawl device for preventing fallof said bar between strokes of the lever, substantially as specified.

7. In a spike-extractor, the reciprocatory rack-bar, having a, grippingdevice, the handie-lever, pawl devices for raisingT said barand forretaining said bar as raised upon opposite strokes of such lever, andmeans for releasing both said pawl devices at the limit of the upsbrokeof said 1ever,subsa,ntia1ly as specified. to

In testimony whereof I affix my signature in presence of two Witnesses.

GEORGE FOSTER PEARSON. Witnesses:

CHARLES II. WORCESTER, GEORGE BRYAN.

